diff --git a/libraries/joomla/event/dispatcher.php b/libraries/joomla/event/dispatcher.php
index 90c662c8a4611..5c16fc7e2c970 100644
--- a/libraries/joomla/event/dispatcher.php
+++ b/libraries/joomla/event/dispatcher.php
@@ -195,7 +195,7 @@ public function attach($observer)
 			// Make sure we haven't already attached this array as an observer
 			foreach ($this->_observers as $check)
 			{
-				if (is_array($check) && $check['event'] == $observer['event'] && $check['handler'] == $observer['handler'])
+				if (is_array($check) && $check['event'] === $observer['event'] && $check['handler'] === $observer['handler'])
 				{
 					return;
 				}